4.7 Article

Network and Nakamura tridiagonal computational simulation of electrically-conducting biopolymer micro-morphic transport phenomena

Journal

COMPUTERS IN BIOLOGY AND MEDICINE
Volume 44, Issue -, Pages 44-56

Publisher

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.compbiomed.2013.10.026

Keywords

Electro-conductive biolpolymers (ECBPs); Magnetohydrodynamics (MHD); Micropolar fluids; Buoyancy; Thermal convection; Hartmann number; Boundary layers; Vortex viscosity; Grashof number; Network simulation; Nakamura method; Micro-rotation

Funding

  1. Fundacion Seneca-Agencia de Ciencia y Tecnologia de la Region de Murcia (Spain) [11021/EE1/09]

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Magnetic fields have been shown to achieve excellent fabrication control and manipulation of conductive bio-polymer characteristics. To simulate magnetohydrodynamic effects on non-Newtonian electro-conductive bio-polymers (ECBPs) we present herein a theoretical and numerical simulation of free convection magneto-micropolar biopolymer flow over a horizontal circular cylinder (an enrobing problem). Eringen's robust micropolar model (a special case of the more general micro-morphic or microfluid model) is implemented. The transformed partial differential conservation equations are solved numerically with a powerful and new code based on NSM (Network Simulation Method) i.e. PSPICE. An extensive range of Hartmann numbers, Grashof numbers, micropolar parameters and Prandtl numbers are considered. Excellent validation is also achieved with earlier non-magnetic studies. Furthermore the present PSPICE code is also benchmarked with an implicit tridiagonal solver based on Nakamura's method (BIONAK) again achieving close correlation. The study highlights the excellent potential of both numerical methods described in simulating nonlinear biopolymer micro-structural flows. (C) 2013 Elsevier Ltd. All rights reserved.

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